On Wed, 25 Feb 2015, Toke Høiland-Jørgensen wrote:
So you mean comparing the scenario where the AQM runs on both sides of
the bottleneck to one where it runs as an ingress shaper on one side
only?
Yes. How much lower speed/rate would the CPE ingress (internet->CPE) AQM
have to run at to have a reasonable low probability of traffic being
delayed by that shaper (or dropped by the policer).
I realise this would be different depending on speed of the access, but
some data points would be interesting.
For instance, some ISPs I've heard will have a policer and 2 seconds worth
of burst, before they drop packets. Some others might have lower burst
values. Some will have a pretty decent FIFO shaper. There are some
different scenarios, how much lower speed do I need to run my AQM at in
order to try to avoid this policer or shaper to affect my traffic? Gut
feeling would be 10-20% should be enough, but I don't know.
--
Mikael Abrahamsson email: [email protected]
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